Fast loose wags usually indicate a happy, friendly dog. Slow wags can signal insecurity or nervousness.
Growling often communicates dominance, possession of toys/food, discomfort or defense.
Whining and whining combined with pacing can indicate a dog needs to go out, feed, or is anxious.
The play bow posture with front legs down and butt in the air invites play and shows friendliness.
Frequent lip licks often signify nervousness and uncertainty, like when meeting new people.
Raised eyebrows paired with a staring gaze reveals a dog is feeling threatened or defensive.
Yawning when not tired shows stress. It's a calming signal.